Air filter for gas burners



April 15, 1930. e. L. GRAYSON ET AL AIR FILTER FOR GAS BURNERS Filed July 15, 1926 Patented Apr. 15, 1930 UNITED STATES PATENT OFFICE GEORGE L. GRAYSON AND CURTIS E. K NIGHT, F ATHENS, OHIO, ASSIGNORS TO T HE J. H. GRAYSON MANUFACTURING COMPANY, OF ATHENS, OHIO, A CQRPORATION OF OHIO AIR FILTER FOR- GAS BURNERS Application filed. July 15,

This invention relates to gas burners, and particularly to an attachment to the burner manifold for gas heaters of the radiant type.

It has been found in practice that the burners used in the radiant type of heater today require such large quantities of air that a large amount of dust is drawn into the burnor. This dust clogs the burners and pipes and results in a reduced eiiiciency.

An object of our invention is to provide a gas burner by which such dust is separated from the entering air.

Another object is to provide a simple, durable air cleaner and one that may be readily attached to many burners now in use.

A further object is to provide an air cleaner attached and detached for cleaning by an unskilled person, and without the use of tools.

These and other objects are attained in the embodiment of our invention which is illustrated in the accompanying drawing, wherein Fig. 1 is a side elevation, with parts broken away, of a burner with our air cleaner attached.

Fig. 2 is an end view thereof.

Fig. 3 is a top plan of the cleaner detached from the burner.

In the drawings, which illustrate a five tube burner, numeral 1 designates the tubes, so which discharge into the horizontal passage 2, with which the burner tips 3 communicate.

The combustible mixture manifold is provided with lugs 4:, upon which is mounted the gas supply manifold 5. The gas supply manifold is provided with openings 6 in alignment with tubes 1.

This construction, so far as described above, may be considered as typical of present day practice. The gas issuing from openings to 6 under pressure rises rapidly into tubes 1, thereby sucking with it a supply of air. The gas and air are mixed in tubes 1 and the hor zontal passage 2 and the resulting combusti ble mixture issues from burner tip 3.

Completely surrounding the gas supply manifold 5 and extending upwardly to a point well above the lower opening of tube 1 is a fine mesh wire gauze 7. This gauze cleaner completely incloses the air inlet to the tubes to 1 and strains the entrained dustpartlcles 1926. Serial No. 122,660.

from the entering air. The cleaner 7 extends the full length of the gas manifold 5, being bent into U shape, as seen in Fig. 2. At each end, two flaps 8 of gauze wire are bent toward each other and an opening 9 provided therein to accommodate each end of the gas supply manifold.

Mounted upon the upper ends of the U shaped gauze wire are two sheet metal reinforcing bands 10, extending the full length of the cleaner, and bent around the free edges of the gauze. Near the opposite ends of the cleaner are pivoted two clip retainers 11, pivoted on the side bands 10, and having their ends bent at right angles, as seen at 12, to engage the opposite side bands 10 and hold the cleaner clamped securely in place.

With a cleaner as thus constructed, all entcring is forced to pass through the fine mesh and dust particles are removed. The cleaner may be attached without dismantling the burner, and without the use'of any tools. It is merely necessary to slip the open top of the cleaner over the gas manifold, and turn the end clips 11 to their engaging positions. Ready removal for cleaning by a householder is thus facilitated.

e do not desire to be restricted to the specific type of burners or gas manifold supply as shown, since these'are for illustrative purposes only.

It is understood that the invention is not limited to the specific embodiment herein shown and described, as various changes in the construction and shape may be made without departing from the spirit of our invention.

We claim 1. The combination with the burner manifold and the spaced gas supply manifold of a radiant gas heater, of an air strainer comprising wire gauze extending along and surrounding the gas manifold, and wire gauze end flaps closing the ends of the strainer, whereby foreign particles are separated from all air entering the burner manifold.

2. In a gas heater of the radiant type, a burner manifold, a gas supply manifold, an air cleaner detachably connected thereto, said cleaner comprising a strainer enveloping the gas manifold, and having reinforcing bands along two ed es thereof, and a pivoted catch on one of sai bands for holding said cleaner in place.

3. An air cleaner for gas heaters of the radiant ty e comprising an elongated strainer bent to a El-shape, reinforcing bands on the upper edges of the strainer, means for connecting the reinforcing bands to hold them in a predetermined position, and end flaps for closing the ends of the elongated strainer.

4. The structure as claimed in claim 3, wherein the means for connecting the reinforcing bands comprises two pivoted clips mounted on one band for engagement with the other band.

a 5. An air cleaner for gas heaters of the radiant type comprising an elongated wire gauze bent to a U shape, integral end flaps bent at right angles to the main body of the strainer for close engagement around the gas manifold, reinforcing bands mounted along the upper edges of the elongated strainer, and clips pivoted on one of said bands for detachable engagement with the other of said bands.

6,. In a gas heater, a combustion mixture manifold having depending inlets, a gas manifold spaced from said combustion manifold and luving gas outlets facing the inlets of said combustion manifold whereby air is sucked into said combustion manifold by the entering gas, and means surrounding the gas manifold for separating dust from said air.

7. In a gas heater, a combustion mixture manifold having inlets for air and gas, a gas manifold having gas outlets spaced from and. facing the inlets of said combustion manifold whereby air is sucked into said combustion manifold by the entering gas, and a wire gauze surrounding'the gas manifold and secured at its longitudinal edges to saidcombustion mixture manifold for preventing entrained dust from entering said combustion manifold.

In testimony whereof, we .aflix our signatures.

GEORGE L. GRAYSON. CURTIS E. KNIGHT. 

